Punctuation rules for the TEAS exam
Preparing for the TEAS exam means mastering more than science and math facts. The reading and English sections test your ability to understand sentence structure and use punctuation correctly. If punctuation trips you up, this guide breaks down the rules you are most likely to encounter on test items and offers quick strategies you can practice with mock questions.
Why punctuation matters on the TEAS
Punctuation changes meaning. A misplaced comma or missing apostrophe can turn a clear sentence into something ambiguous or incorrect. On the TEAS, questions may ask you to choose the sentence with correct punctuation, to fix a run-on, or to select the version that preserves the writer’s intended meaning. Good punctuation also helps you read passages faster and with less confusion when timing is tight.
Common punctuation marks tested
Study these marks because they appear frequently on the exam: commas, periods, apostrophes, colons, commas used with coordinating conjunctions, and parentheses. Quotation marks and question marks show up in reading comprehension and grammar items as well.
Practical rules and quick checks
- Commas with coordinating conjunctions , Use a comma before conjunctions like and, but, or when they join two independent clauses. Quick check: can each side stand alone as a sentence? If yes, add the comma.
- Apostrophes for possession and contraction , Use apostrophes to show ownership (the nurse’s chart) and to form contractions (it’s = it is). Do not use apostrophes to make plurals.
- Periods and end punctuation , Periods end declarative sentences. Make sure a sentence isn’t actually a fragment or part of a list that requires commas instead.
- Colons and lists , Use a colon to introduce a list or explanation, but only after a complete sentence. If the introductory phrase is a fragment, do not use a colon.
- Run-ons and fused sentences , Look for two subjects and verbs joined without proper punctuation. Fix them by adding a comma and conjunction, a semicolon, or by splitting into two sentences.
Examples and short practice items
Seeing rules in action helps. Compare these pairs in your head and choose the correct option:
- The patient arrived on time, and the doctor began the exam. (Correct if both parts can stand alone.)
- The patient arrived on time and the doctor began the exam. (Acceptable only if the second clause is not independent.)
Another quick test: decide whether the apostrophe belongs. The nurses station is busy. The nurse’s station is busy. The second is correct because the station belongs to the nurse.
Common mistakes and how to avoid them
Students often overuse commas, confuse its with it’s, and join sentences without connectors. A useful habit is to read sentences aloud. If you naturally pause, a comma might be needed. If a sentence feels like two complete thoughts, try adding a period and read again for clarity.
Practice resources and next steps
Regular practice with realistic questions is the most reliable way to improve. Use an ati teas practice test to focus on timing and to expose recurring question types. When you want to drill the science passages that also require parsing complex sentences, try an ati teas science practice test for relevant reading and comprehension practice.
If you prefer structured mock sets, check study providers and sample exams that simulate the real pacing. Bookmark one trusted site like NursingMocks.com for organized practice sets across reading, grammar, math, and science. Start by reviewing basic punctuation rules, then do timed practice and review every error. That cycle builds accuracy and speed, which matter on test day.
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